apowers1760
22.08.2019 •
Mathematics
Mary’s yard is a mess. she needs to hire someone to prune her trees and shrubs. a landscaping service she calls quotes her a price of $15 consultation fee plus $8 an hour for the actual work. mary’s neighbor has offered to her out. she doesn’t charge a consultation fee, but does charge $10 an hour for her work.
who do you think mary should hire for a 3-hour job and why?
a.
mary should hire the landscaping service; 3 hours of labor would cost $23, while the neighbor would charge $30.
b.
mary should hire the landscaping service; 3 hours of labor would cost $30, while the neighbor would charge $39.
c.
mary should hire her neighbor; 3 hours of labor would cost $39, while the landscaping service would charge $30.
d.
mary should hire her neighbor; 3 hours of labor would cost $30, while the landscaping service would charge $39.
Solved
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Ответ:
8x + 15= y
10x=y
If she has a 3 hour job, we can plug 3 in for x to find out which is better
8(3) + 15=y
24 + 15= y
39=y for a landscaping service
10(3)=y
30=y for a neighbors help
Since it will cost her 9 dollars less, she should go with the neighbor
D
Ответ: